My Brand New CTC-7! - Page 13 - Videokarma.org TV - Video

SwizzyMan · #**181** 07-19-2015, 06:33 PM

Quote:

Originally Posted by tvcollector

I would assume that would be why there is problems, each cap in those cans you restuffed needs to have the negative leads connected to ground, as in metal of chassis, unless those cans are isolated... What I would do is connect all neg leads from each cap in each can together soldered, and run a wire soldered to them to a spot on the chassis that already has a cut out where ground leads are already solder too...

That is what I have done the cap leads were not long enough so I soldered some excess capacitor leads to the neg leads and then soldered that wire to a ground tab

DaveWM · #**182** 07-19-2015, 07:01 PM

I have asked for pictures of the work done, I can't help you as I can't follow your written response. You need to get a pic of the work done on the cans.

also if you are getting a rastor the work is prob ok.

That being the case you need to confirm you have the tuner hooked up right (leads connected etc...) you should try an alternate source of RF.

from the looks of it I would guess an incorrectly hooked up ant lead or maybe an RF tube. did you wiggle that one in the tuner?

SwizzyMan · #**183** 07-19-2015, 07:06 PM

Quote:

Originally Posted by DaveWM

I have asked for pictures of the work done, I can't help you as I can't follow your written response. You need to get a pic of the work done on the cans.

also if you are getting a rastor the work is prob ok.

That being the case you need to confirm you have the tuner hooked up right (leads connected etc...) you should try an alternate source of RF.

from the looks of it I would guess an incorrectly hooked up ant lead or maybe an RF tube. did you wiggle that one in the tuner?

I will take some pictures in about an hour or so here so please bear with me.

SwizzyMan · #**184** 07-19-2015, 07:27 PM

Here are the pictures scroll down to the bottom to see them I took 6 of them
http://imgur.com/a/oTaRJ

DaveWM · #**185** 07-19-2015, 07:42 PM

at what point did you lose the video signal?

its hard to tell whats going on with the caps even with the pics.

make sure you ant connections are good from the ant term block back to the tuner. Did you wiggle the RF tube in the tuner?

SwizzyMan · #**186** 07-19-2015, 07:48 PM

lost the signal after a few seconds of having it on for the first time. Wiggled the tubes helped a bit not much though

SwizzyMan · #**187** 07-19-2015, 07:57 PM

Ok wiggled the connectors and now I have a coherent picture but the horizontal is bending and the vertical isnt very stable

SwizzyMan · #**188** 07-19-2015, 08:14 PM

Seems that just tv shows mainly mess with the horiz and vert hold but the crosshatch and the alignment patterns are somewhat better but still iffy with the holds. The color bar patterns are a lot more stable. Could this be bad caps or a coil adjustment?

Phil Nelson · #**189** 07-20-2015, 12:09 AM

Wiggling a tube is only a temporary cure for a situation where a tube has dirty/corroded pins, or its socket has dirty/corroded connectors, or both. Have you every tried cleaning them? See http://antiqueradio.org/FirstStepsInRestoration.htm . If wiggling a connector makes things better and worse, that connection needs to be cleaned or resoldered, whichever is appropriate.

Phil Nelson

DaveWM · #**190** 07-20-2015, 07:31 AM

Quote:

Originally Posted by SwizzyMan

Seems that just tv shows mainly mess with the horiz and vert hold but the crosshatch and the alignment patterns are somewhat better but still iffy with the holds. The color bar patterns are a lot more stable. Could this be bad caps or a coil adjustment?

Start with what Phil said, find the intermittent connections and correct.

DO NOT ADJ ANY COILS if you do all bets are off.

DaveWM · #**191** 07-20-2015, 07:41 AM

also for now stop using the BT, use the RF out from a reg DVD or converter box.

SwizzyMan · #**192** 07-20-2015, 07:43 AM

So for sure that is what is causing the bad horiz and vertical hold? I think some of that power transformer wax has dripped onto some tube sockets the underside of the socket where the solder joints are. Could that be causing problems?

DaveWM · #**193** 07-20-2015, 07:58 AM

more likely the RF source which is why I keep asking you to change it.

SwizzyMan · #**194** 07-20-2015, 08:03 AM

Alright sorry just wanted to make sure there was not going to be any further problems with that wax. I'll take it out today and do what I can.

DaveWM · #**195** 07-20-2015, 08:15 AM

as previously stated, you need to make sure tube sockets are clean esp since it seems they maybe part of the intermittent video signal.

One issue at a time, get that worked out 1st then next will be the horz/vert lock issues.

My guess is you have an AGC or sync separator issue (or a signal issue from the RF source), there are many causes for this, but again FIRST get the intermittent issue worked out.

you should not have to worry about just touching a wire or a tube and have that cause a problem.

on and DONT squirt cleaning solution all over the sockets, esp the tuner. Rather pull the tube out spray the pins, then insert the tube several times. Most times that is all that is needed to clean the socket. Look at the pins of the tube if corroded use fine (500 grit) paper to clean off or use a brass bush.

on really bad sockets I use carb cleaning spiral brushes (soaked with cleaner/lube) to clean out. BUT you don't want to use too large a brush and risk opening up the little socket holes.